Synthesis and optical properties of dyes encapsulated in gold hollow nanoshells

Gabudean, Anna-Maria; Lerouge, Frédéric; Gallavardin, Thibault; Iosin, Monica; Zaiba, Soraya; Maury, Olivier; Baldeck, Patrice L.; Andraud, Chantal; Parola, Stéphane

doi:10.1016/j.optmat.2011.03.017

Cited by 13 publications

(5 citation statements)

References 23 publications

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“…For instance, Rhodamine 610 was included into hollow gold nanospheres (Figure 42). [426,484] Interestingly this confinement showed a strong decrease in the emission lifetime from 1.7 ns in water to less than 150 ps in the shell together with a strong improvement of the photostability of the dyes (an order of magnitude). The object appeared also brighter than the pure fluorophore.…”

Section: Encapsulation Of Dyes In Metalsmentioning

confidence: 93%

Optical Properties of Hybrid Organic‐Inorganic Materials and their Applications

Parola

Julián‐López

Carlos

et al. 2016

Adv Funct Materials

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240

116

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Research on hybrid inorganic‐organic materials has experienced an explosive growth since the 1980s, with the expansion of soft inorganic chemistry based processes. Indeed, mild synthetic conditions, low processing temperatures provided by “chimie douce” and the versatility of the colloidal state allow for the mixing of the organic and inorganic components at the nanometer scale in virtually any ratio to produce the so called hybrid materials. Today a high degree of control over both composition and nanostructure of these hybrids can be achieved allowing tunable structure‐property relationships. This, in turn, makes it possible to tailor and fine‐tune many properties (mechanical, optical, electronic, thermal, chemical…) in very broad ranges, and to design specific multifunctional systems for applications. In particular, the field of “Hybrid‐Optics” has been very productive not only scientifically but also in terms of applications. Indeed, numerous optical devices based on hybrids are already in, or very close, to the market. This review describes most of the recent advances performed in this field. Emphasis will be given to luminescent, photochromic, NLO and plasmonic properties. As an outlook we show that the controlled coupling between plasmonics and luminescence is opening a land of opportunities in the field of “Hybrid‐Optics”.

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Section: Encapsulation Of Dyes In Metalsmentioning

confidence: 93%

Optical Properties of Hybrid Organic‐Inorganic Materials and their Applications

Parola

Julián‐López

Carlos

et al. 2016

Adv Funct Materials

Self Cite

240

116

View full text Add to dashboard Cite

show abstract

“…Noble metal nanostructures are of particular interest due to their physical and chemical properties [1], making them suitable for potential applications such as optics [2][3][4][5], catalysis [6] or surface-enhanced Raman scattering [7]. One characteristic of noble metal nanoparticles is their optical response which gives rise to a broad absorption band in the visible region.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, electron tomography and single-particle optical response of twisted gold nano-bipyramids

Navarro¹,

Manchon²,

Lerouge³

et al. 2012

Nanotechnology

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A great number of works focus their interest on the study of gold nanoparticle plasmonic properties. Among those, sharp nanostructures appear to exhibit the more interesting features for further developments. In this paper, a complete study on bipyramidal-like gold nanostructures is presented. The nano-objects are prepared in high yield using an original method. This chemical process enables a precise control of the shape and the size of the particles. The specific photophysical properties of gold bipyramids in suspension are ripened by recording the plasmonic response of single and isolated objects. Resulting extinction spectra are precisely correlated to their geometrical structure by mean of electron tomography at the single-particle level. The interplay between the geometrical structure and the optical properties of twisted gold bipyramids is further discussed on the basis of numerical calculations. The influence of several parameters is explored such as the structural aspect ratio or the tip truncation. In the case of an incident excitation polarized along the particle long axis, this study shows how the plasmon resonance position can be sensitive to these parameters and how it can then be efficiently tuned on a large wavelength range.

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“…The ability for scientists to design and reshape noble metal objects at the nanometer scale offers an exciting pathway to applications such as photonics [1][2][3], catalysis [4][5][6], and surface enhanced Raman spectroscopy [7][8][9]. Among all these applications, gold nanoparticles are an interesting candidate as a consequence of their specific optical response, the surface plasmon resonance, which can be spectrally tuned by modeling the size and the shape of the final object [10][11][12][13][14][15][16][17]. This extinction phenomenon (absorption and scattering contribution) can be so strong that individual particles are detected in microfluidic channels [18] or in cells [19].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of PEGylated gold nanostars and bipyramids for intracellular uptake

Navarro¹,

Manchon²,

Lerouge³

et al. 2012

Nanotechnology

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A great number of works have focused their research on the synthesis, design and optical properties of gold nanoparticles for potential biological applications (bioimaging, biosensing). For this kind of application, sharp gold nanostructures appear to exhibit the more interesting features since their surface plasmon bands are very sensitive to the surrounding medium. In this paper, a complete study of PEGylated gold nanostars and PEGylated bipyramidal-like nanostructures is presented. The nanoparticles are prepared in high yield and their surfaces are covered with a biocompatible polymer. The photophysical properties of gold bipyramids and nanostars, in suspension, are correlated with the optical response of single and isolated objects. The resulting spectra of isolated gold nanoparticles are subsequently correlated to their geometrical structure by transmission electron microscopy. Finally, the PEGylated gold nanoparticles were incubated with melanoma B16-F10 cells. Dark-field microscopy showed that the biocompatible gold nanoparticles were easily internalized and most of them localized within the cells.

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Synthesis and optical properties of dyes encapsulated in gold hollow nanoshells

Cited by 13 publications

References 23 publications

Optical Properties of Hybrid Organic‐Inorganic Materials and their Applications

Optical Properties of Hybrid Organic‐Inorganic Materials and their Applications

Synthesis, electron tomography and single-particle optical response of twisted gold nano-bipyramids

Synthesis of PEGylated gold nanostars and bipyramids for intracellular uptake

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